Resistance breathing device



FIG. 1 is a top perspective view of a resistance breathing device;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a right-side elevation view thereof; and,

FIG. 7 is a bottom elevation view thereof.

The broken lines in the drawings depict portions of the resistance breathing device that form no part of the claimed design. 

CLAIM The ornamental design for a resistance breathing device, as shown and described. 